/Engine/Plugins/Media/MediaIOFramework/Source/MediaIOEditor/Public/Widgets/SMediaPermutationsSelector.h
A delegate type invoked when we fill a column and wants to check if it should be visible.
typedef TBaseDelegate_TwoParams< bool, [FName](API\Runtime\Core\UObject\FName), const [TArray](API\Runtime\Core\Containers\TArray)< ItemType > & > FIsColumnVisible